The control strategy, based on instantaneous power theory, can directly calculate the active and reactive component of currents using measured grid voltage and currents and generate inverter switching pulses based on the formulated reference current values and thus helping to improve the dynamic response when voltage sag takes place.
However, for the most common three-phase three-wire grid-connected inverters based power systems, there may be a trade-off between power oscillations and current harmonics during the unbalanced grid fault ride through control, which has a crucial impact on the installed inverters for different applications.
Therefore, the proposed solution IV is suggested to control the grid-connected inverter currents within a safe range to avoid the overcurrent risk effectively under the unbalanced grid voltage fault. The experimental results verify the effectiveness of the proposed solutions.
Furthermore, the peak current is one of the most important factors to ensure the safe operation of inverter to avoid overcurrent in practice. Therefore, the proposed solution IV is suggested to control the grid-connected inverter currents within a safe range to avoid the overcurrent risk effectively under the unbalanced grid voltage fault.
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The novel power inverter aims to achieve grid-enhanced power quality and reliability through an inverter that can adjust instantly to new load demands in the grid with instantaneous increases …
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A complex-variable sliding-mode control (SMC) algorithm is proposed to govern inverters interfacing renewable energy sources (RESs) with the electrical grid. It is conceived …
An improved low‐voltage ride‐through (LVRT) strategy for PV‐based grid connected inverter using instantaneous power theory …
Instantaneous power theory-based inverter control strategy has been implemented in hybrid microgrid system and the performance of the inverter is monitored during several …
Besides, the experimental results are on good agreement with the theoretical analysis. It is evident that there is a tradeoff between inverter current harmonics and instantaneous power …
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